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Home > Exam Questions > ATPL - Airline Transport Pilot Licence > Performance > In the fictional MRJT1 drift-down data in CAA CAP698, Figure 4.24 (37,000 ft, standard bleed configuration and ISA +10 degrees C or colder), why does the 35,000 kg equivalent-gross-mass curve start at approximately 4 minutes after engine failure?

87 - ATPL Question Bank in English - In the fictional MRJT1 drift-down data in CAA CAP698, Figure 4.24 (37,000 ft, standard bleed configuration and ISA +10 degrees C or colder), why does the 35,000 kg equivalent-gross-mass curve start at approximately 4 minutes after engine failure?

Question 87 - Performance - ATPL - Airline Transport Pilot Licence

Due to higher TAS at this mass it takes more time to develop the optimal rate of descent, because of the inertia involved

Because at this mass the engines slow down at a slower rate after failure, there is still some thrust left during four minutes

All the curves start at the same point, which is situated outside the chart

Because at this mass it takes approximately 4 minutes to decelerate to the optimum speed for drift down at the original cruising level

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